Successful Treatment of Myeloid Sarcoma in an Elderly Patient with Myelodysplastic Syndrome with Reduced-Dose Azacitidine

Figure 3

The histological findings of the tumor located in the left groin. A biopsy specimen showed the proliferation of tumor cells with a high nuclear/cytoplasmic ratio on hematoxylin and eosin staining (×20) (a). Immunohistochemical staining (×20) of tumor cells was positive for myeloperoxidase (b), partially positive for cluster of differentiation (CD) 68 (c), negative for CD4 (d), and negative for CD123 (e).

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(b)

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